. >> her name is -- >> gypsy jillian willis. >> gypsy jillian willis. >> the jury hears how martinny. >> because she was nothing like my mom. >> did you ever see your dad and jillian interact? >> yes. >> what did you see? >> i remember her going up to my dad's room at night, and have the door closed, and i remember staying up at night and thinking, what in the world is -- why is she up in dad's room? she's the nanny. >> reporter: the testimony of his children may have been devastating to martin macneill, but what may have sealed his fate was his former cellmates, while serving in prison sense for identity fraud. >> did martin talk about the relationship he had with his wife before she died? >> a little, yes. that she was not going to let him keep cheating on her. >> did he say he was cheating on her? >> yeah, he told me about his girlfriend. i don't remember. i don't recall. i don't recall the name. >> her name was gypsy or dipsy or something. >> doc, they said you murder your wife. i can get a way with a lot of things. >> did he say anything else? >> got away with murder of his wi